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Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/inc/lib/tracking.lib.php

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<?php
// $Id: tracking.lib.php 2007-28-02 15:51:53
/*
==============================================================================
Dokeos - elearning and course management software
Copyright (c) 2004-2008 Dokeos SPRL
Copyright (c) 2003 Ghent University (UGent)
Copyright (c) 2001 Universite catholique de Louvain (UCL)
Copyright (c) various contributors
For a full list of contributors, see "credits.txt".
The full license can be read in "license.txt".
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
See the GNU General Public License for more details.
Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
Mail: info@dokeos.com
==============================================================================
*/
/**
==============================================================================
* This is the tracking library for Dokeos.
* Include/require it in your code to use its functionality.
*
* @package dokeos.library
* @author Julio Montoya <gugli100@gmail.com> (Score average fixes)
==============================================================================
*/
class Tracking {
/**
* Calculates the time spent on the platform by a user
* @param integer $user_id the user id
* @return timestamp $nb_seconds
*/
function get_time_spent_on_the_platform($user_id) {
$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
$sql = 'SELECT login_date, logout_date FROM ' . $tbl_track_login . '
WHERE login_user_id = ' . intval($user_id);
$rs = Database::query($sql,__FILE__,__LINE__);
$nb_seconds = 0;
$wrong_logout_dates = false;
while ($a_connections = Database::fetch_array($rs)) {
$s_login_date = $a_connections["login_date"];
$s_logout_date = $a_connections["logout_date"];
$i_timestamp_login_date = strtotime($s_login_date);
$i_timestamp_logout_date = strtotime($s_logout_date);
if($i_timestamp_logout_date>0)
{
$nb_seconds += ($i_timestamp_logout_date - $i_timestamp_login_date);
}
else
{ // there are wrong datas in db, then we can't give a wrong time
$wrong_logout_dates = true;
}
}
if($nb_seconds>0 || !$wrong_logout_dates)
{
return $nb_seconds;
}
else
{
return -1; //-1 means we have wrong datas in the db
}
}
/**
* Calculates the time spent on the course
* @param integer $user_id the user id
* @param string $course_code the course code
* @return timestamp $nb_seconds
*/
function get_time_spent_on_the_course($user_id, $course_code) {
// protect datas
$user_id = intval($user_id);
$course_code = addslashes($course_code);
$tbl_track_course = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
$condition_user = "";
if (is_array($user_id)) {
$condition_user = " AND user_id IN (".implode(',',$user_id).") ";
} else {
$condition_user = " AND user_id = '$user_id' ";
}
$sql = " SELECT SUM(UNIX_TIMESTAMP(logout_course_date)-UNIX_TIMESTAMP(login_course_date)) as nb_seconds
FROM $tbl_track_course
WHERE course_code='$course_code' $condition_user";
$rs = Database::query($sql,__FILE__,__LINE__);
$row = Database::fetch_array($rs);
return $row['nb_seconds'];
}
function get_first_connection_date($student_id) {
$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
$sql = 'SELECT login_date FROM ' . $tbl_track_login . '
WHERE login_user_id = ' . intval($student_id) . '
ORDER BY login_date ASC LIMIT 0,1';
$rs = Database::query($sql,__FILE__,__LINE__);
if(Database::num_rows($rs)>0)
{
if ($first_login_date = Database::result($rs, 0, 0)) {
return format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($first_login_date));
}
}
return false;
}
function get_last_connection_date($student_id, $warning_message = false, $return_timestamp = false) {
$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
$sql = 'SELECT login_date FROM ' . $tbl_track_login . '
WHERE login_user_id = ' . intval($student_id) . '
ORDER BY login_date DESC LIMIT 0,1';
$rs = Database::query($sql,__FILE__,__LINE__);
if(Database::num_rows($rs)>0)
{
if ($last_login_date = Database::result($rs, 0, 0))
{
if ($return_timestamp)
{
return strtotime($last_login_date);
}
else
{
if (!$warning_message)
{
return format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_login_date));
}
else
{
$timestamp = strtotime($last_login_date);
$currentTimestamp = mktime();
//If the last connection is > than 7 days, the text is red
//345600 = 7 days in seconds
if ($currentTimestamp - $timestamp > 604800)
{
return '<span style="color: #F00;">' . format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_login_date)) . '</span>';
}
else
{
return format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_login_date));
}
}
}
}
}
return false;
}
function get_first_connection_date_on_the_course($student_id, $course_code) {
$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
$sql = 'SELECT login_course_date FROM ' . $tbl_track_login . '
WHERE user_id = ' . intval($student_id) . '
AND course_code = "' . Database::escape_string($course_code) . '"
ORDER BY login_course_date ASC LIMIT 0,1';
$rs = Database::query($sql,__FILE__,__LINE__);
if(Database::num_rows($rs)>0)
{
if ($first_login_date = Database::result($rs, 0, 0)) {
return format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($first_login_date));
}
}
return false;
}
function get_last_connection_date_on_the_course($student_id, $course_code) {
$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
$sql = 'SELECT login_course_date FROM ' . $tbl_track_login . '
WHERE user_id = ' . intval($student_id) . '
AND course_code = "' . Database::escape_string($course_code) . '"
ORDER BY login_course_date DESC LIMIT 0,1';
$rs = Database::query($sql,__FILE__,__LINE__);
if(Database::num_rows($rs)>0)
{
if ($last_login_date = Database::result($rs, 0, 0)) {
$timestamp = strtotime($last_login_date);
$currentTimestamp = mktime();
//If the last connection is > than 7 days, the text is red
//345600 = 7 days in seconds
if ($currentTimestamp - $timestamp > 604800) {
return '<span style="color: #F00;">' . format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_login_date)) . (api_is_allowed_to_edit()?' <a href="'.api_get_path(REL_CODE_PATH).'announcements/announcements.php?action=add&remind_inactive='.$student_id.'" title="'.get_lang('RemindInactiveUser').'"><img align="middle" src="'.api_get_path(WEB_IMG_PATH).'messagebox_warning.gif" /></a>':'').'</span>';
} else {
return format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_login_date));
}
}
}
return false;
}
function count_course_per_student($user_id) {
$user_id = intval($user_id);
$tbl_course_rel_user = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
$tbl_session_course_rel_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$sql = 'SELECT DISTINCT course_code
FROM ' . $tbl_course_rel_user . '
WHERE user_id = ' . $user_id;
$rs = Database::query($sql, __FILE__, __LINE__);
$nb_courses = Database::num_rows($rs);
$sql = 'SELECT DISTINCT course_code
FROM ' . $tbl_session_course_rel_user . '
WHERE id_user = ' . $user_id;
$rs = Database::query($sql, __FILE__, __LINE__);
$nb_courses += Database::num_rows($rs);
return $nb_courses;
}
/**
* This function gets the score average from all tests in a course by student
* @param int $student_id - or array for multiples User id (array(0=>1,1=>2))
* @param string $course_code - Course id
* @return string value (number %) Which represents a round integer about the score average.
*/
function get_avg_student_exercise_score($student_id, $course_code) {
// protect datas
$course_code = Database::escape_string($course_code);
// get the informations of the course
$a_course = CourseManager :: get_course_information($course_code);
if(!empty($a_course['db_name'])) {
// table definition
$tbl_course_quiz = Database::get_course_table(TABLE_QUIZ_TEST,$a_course['db_name']);
$tbl_stats_exercise = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
$count_quiz = Database::fetch_row(Database::query("SELECT count(id) FROM $tbl_course_quiz WHERE active <> -1",__FILE__,__LINE__));
$quiz_avg_total_score = 0;
if (!empty($count_quiz[0]) && !empty($student_id)) {
$condition_user = "";
if (is_array($student_id)) {
$condition_user = " AND exe_user_id IN (".implode(',',$student_id).") ";
} else {
$condition_user = " AND exe_user_id = '$student_id' ";
}
$sql = "SELECT SUM(exe_result/exe_weighting*100) as avg_score
FROM $tbl_stats_exercise
WHERE exe_exo_id IN (SELECT id FROM $tbl_course_quiz WHERE active <> -1)
$condition_user
AND orig_lp_id = 0
AND exe_cours_id = '$course_code'
AND orig_lp_item_id = 0
ORDER BY exe_date DESC";
$res = Database::query($sql, __FILE__, __LINE__);
$row = Database::fetch_array($res);
$quiz_avg_score = 0;
if (!empty($row['avg_score'])) {
$quiz_avg_score = round($row['avg_score'],2);
}
$count_attempt = Database::fetch_row(Database::query("SELECT count(*) FROM $tbl_stats_exercise WHERE exe_exo_id IN (SELECT id FROM $tbl_course_quiz WHERE active <> -1) $condition_user AND orig_lp_id = 0 AND exe_cours_id = '$course_code' AND orig_lp_item_id = 0 ORDER BY exe_date DESC",__FILE__,__LINE__));
if(!empty($count_attempt[0])) {
$quiz_avg_score = $quiz_avg_score / $count_attempt[0];
}
$quiz_avg_total_score = $quiz_avg_score;
return $quiz_avg_total_score/$count_quiz[0];
}
}
return null;
}
function get_avg_student_progress($student_id, $course_code) {
// protect datas
$course_code = addslashes($course_code);
// get the informations of the course
$a_course = CourseManager :: get_course_information($course_code);
if (!empty($a_course['db_name'])) {
// table definition
$tbl_course_lp_view = Database :: get_course_table(TABLE_LP_VIEW, $a_course['db_name']);
$tbl_course_lp = Database :: get_course_table(TABLE_LP_MAIN, $a_course['db_name']);
$count_lp = Database::fetch_row(Database::query("SELECT count(id) FROM $tbl_course_lp",__FILE__,__LINE__));
$avg_progress = 0;
if (!empty($count_lp[0]) && !empty($student_id)) {
$condition_user = "";
if (is_array($student_id)) {
$condition_user = " lp_view.user_id IN (".implode(',',$student_id).") AND ";
} else {
$condition_user = " lp_view.user_id = '$student_id' AND ";
}
$sqlProgress = "SELECT SUM(progress) FROM $tbl_course_lp_view AS lp_view WHERE $condition_user lp_view.lp_id IN (SELECT id FROM $tbl_course_lp)";
$resultItem = Database::query($sqlProgress, __FILE__, __LINE__);
$rowItem = Database::fetch_row($resultItem);
$avg_progress = round($rowItem[0] / $count_lp[0], 1);
return $avg_progress;
}
}
return null;
}
/**
* This function gets:
* 1. The score average from all SCORM Test items in all LP in a course-> All the answers / All the max score.
* 2. The score average from all Tests (quiz) in all LP in a course-> All the answers / All the max score.
* 3. And finally it will return the average between 1. and 2.
* This function does not take the results of a Test out of a LP
*
* @param User id
* @param Course id
* @param Array limit average to listed lp ids
* @return string value (number %) Which represents a round integer explain in got in 3.
*/
function get_avg_student_score($student_id, $course_code, $lp_ids=array()) {
$course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
$course_user_table = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
$table_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$tbl_stats_exercices = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
$tbl_stats_attempts= Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);
$course = CourseManager :: get_course_information($course_code);
if (!empty($course['db_name'])) {
$tbl_quiz_questions= Database :: get_course_table(TABLE_QUIZ_QUESTION,$course['db_name']);
$lp_table = Database :: get_course_table(TABLE_LP_MAIN,$course['db_name']);
$lp_item_table = Database :: get_course_table(TABLE_LP_ITEM,$course['db_name']);
$lp_view_table = Database :: get_course_table(TABLE_LP_VIEW,$course['db_name']);
$lp_item_view_table = Database :: get_course_table(TABLE_LP_ITEM_VIEW,$course['db_name']);
$condition_lp = "";
if(count($lp_ids) > 0) {
$condition_lp =" WHERE id IN(".implode(',',$lp_ids).") ";
}
$count_row_lp = Database::fetch_row(Database::query("SELECT count(*) FROM $lp_table $condition_lp",__FILE__,__LINE__));
$lp_scorm_score_total = 0;
$lp_scorm_weighting_total = 0;
$lp_scorm_result_score_total = 0;
$lp_scorm_loop=0;
$lp_count = 0;
$progress = 0;
if (!empty($count_row_lp[0]) && !empty($student_id)) {
$condition_user1 = "";
if (is_array($student_id)) {
$condition_user1 =" AND user_id IN (".implode(',',$student_id).") ";
} else {
$condition_user1 =" AND user_id = '$student_id' ";
}
$sql = "SELECT max(id) as id, lp_id, user_id FROM $lp_view_table WHERE lp_id IN (SELECT id FROM $lp_table $condition_lp) $condition_user1 GROUP BY lp_id,user_id";
$rs_last_lp_view_id = Database::query($sql, __FILE__, __LINE__);
$score_of_scorm_calculate = 0;
if (Database::num_rows($rs_last_lp_view_id) > 0) {
while ($row_lp_view = Database::fetch_array($rs_last_lp_view_id)) {
$lp_view_id = $row_lp_view['id'];
// we get the progress
$sql='SELECT progress FROM '.$lp_view_table.' WHERE id="'.$lp_view_id.'"';
$rs = Database::query($sql, __FILE__, __LINE__);
$progress = Database::result($rs,0,'progress');
// item's list of an scorm
$sql_max_score='SELECT lp_iv.score as score,lp_i.max_score
FROM '.$lp_item_view_table.' as lp_iv
INNER JOIN '.$lp_item_table.' as lp_i
ON lp_i.id = lp_iv.lp_item_id
AND lp_i.item_type="sco"
WHERE lp_view_id="'.$lp_view_id.'"';
$res_max_score=Database::query($sql_max_score,__FILE__,__LINE__);
$count_total_loop=0;
$num_rows_max_score=Database::num_rows($res_max_score);
if ($num_rows_max_score==1) {
while ($row_max_score=Database::fetch_array($res_max_score)) {
if ($row_max_score['max_score']==0) {
//when there's no max score, we assume 100 as the max score, as the SCORM 1.2 says that the value should always be between 0 and 100.
$lp_scorm_result_score_total+=($row_max_score['score']/100);
$current_value = $row_max_score['score']/100;
} else {
$lp_scorm_result_score_total+=($row_max_score['score']/$row_max_score['max_score']);
$current_value = $row_max_score['score']/$row_max_score['max_score'];
}
$count_total_loop++;
}
} elseif ($num_rows_max_score > 1) {
while ($row_max_score=Database::fetch_array($res_max_score)) {
if ($row_max_score['max_score']==0) {
$lp_scorm_result_score_total+=($row_max_score['score']/100);
$current_value = $row_max_score['score']/100;
} else {
//when there's no max score, we assume 100 as the max score, as the SCORM 1.2 says that the value should always be between 0 and 100.
$lp_scorm_result_score_total+=($row_max_score['score']/$row_max_score['max_score']);
$current_value = $row_max_score['score']/$row_max_score['max_score'];
}
$count_total_loop++;
}
}
if ($num_rows_max_score > 0 && ($progress > 0 || $current_value > 0 )) {
$lp_count++;
}
if ($count_total_loop==0) {
$count_total_loop=1;
}
$score_of_scorm_calculate=round((($lp_scorm_result_score_total/$count_total_loop)*100),2);
}
}
if(count($lp_ids)==0 ) {
$score_of_scorm_calculate=round((($score_of_scorm_calculate/$count_row_lp[0])),2);
}
$lp_scorm_score_total = $score_of_scorm_calculate;
$condition_user2 = "";
if (is_array($student_id)) {
$condition_user2 =" lp_view.user_id IN (".implode(',',$student_id).") AND ";
} else {
$condition_user2 =" lp_view.user_id = '$student_id' AND ";
}
//Path is the exercise id
$sql = "SELECT lp_view.id as lp_view_id, lp_view.lp_id as lp_id, lp_item.path, lp_item.id as item_id, lp_item.max_score, lp_view.user_id as user_id
FROM $lp_view_table lp_view
INNER JOIN $lp_item_table lp_item ON lp_item.lp_id = lp_view.lp_id AND item_type='".TOOL_QUIZ."'
WHERE $condition_user2 lp_view.lp_id IN (SELECT id FROM $lp_table $condition_lp)";;
$rsItems = Database::query($sql, __FILE__, __LINE__);
$total_score = $total_weighting = 0;
if (Database::num_rows($rsItems) > 0) {
while ($item = Database::fetch_array($rsItems)) {
$lp_view_id = $item['lp_view_id'];
$lp_item_id = $item['item_id'];
$lp_id = $item['lp_id'];
$user_id = $item['user_id'];
// we take the score from a LP because we have lp_view_id
$sql = "SELECT score FROM $lp_item_view_table WHERE lp_item_id = '$lp_item_id' and lp_view_id = '$lp_view_id'
ORDER BY view_count DESC limit 1";
$rsScores = Database::query($sql, __FILE__, __LINE__);
// Real max score - this was implemented because of the random exercises
$sql_last_attempt = 'SELECT exe_id FROM '. $tbl_stats_exercices. ' ' .
'WHERE exe_exo_id="' .$item['path']. '" AND exe_user_id="' . $user_id . '" AND orig_lp_id = "'.$lp_id.'" AND orig_lp_item_id = "'.$lp_item_id.'" AND exe_cours_id="' . $course_code . '" ORDER BY exe_date DESC limit 1';
$resultLastAttempt = Database::query($sql_last_attempt, __FILE__, __LINE__);
$num = Database :: num_rows($resultLastAttempt);
if ($num > 0){
if ($num > 1){
while ($rowLA = Database :: fetch_row($resultLastAttempt)) {
$id_last_attempt = $rowLA[0];
}
} else {
$id_last_attempt = Database :: result($resultLastAttempt, 0, 0);
}
}
$sql = "SELECT SUM(t.ponderation) as maxscore from ( SELECT distinct question_id, marks,ponderation FROM $tbl_stats_attempts as at " .
"INNER JOIN $tbl_quiz_questions as q on(q.id = at.question_id) where exe_id ='$id_last_attempt' ) as t";
$result = Database::query($sql, __FILE__, __LINE__);
$row_max_score = Database :: fetch_array($result);
$maxscore = $row_max_score['maxscore'];
if ($maxscore=='') {
$maxscore = $item['max_score'];
}
if(Database::num_rows($rsScores)>0) {
$total_score = Database::result($rsScores, 0, 0);
$total_weighting += $maxscore;
if($total_weighting>0 && $maxscore>0) {
$lp_scorm_score_total += ($total_score/$maxscore)*100;
$lp_scorm_weighting_total+=100;
}
}
}
}
}
$totalScore = $lp_scorm_score_total;
$pourcentageScore = 0;
if($lp_scorm_weighting_total>0) {
//i.e 10.52
$pourcentageScore = round( (($totalScore * 100) / $lp_scorm_weighting_total),2);
return $pourcentageScore;
} elseif ($score_of_scorm_calculate>0) {
//echo '<br>'.$score_of_scorm_calculate;
return $score_of_scorm_calculate;
} else {
return null;
}
}
}
/**
* gets the list of students followed by coach
* @param integer $coach_id the id of the coach
* @return Array the list of students
*/
function get_student_followed_by_coach($coach_id) {
$coach_id = intval($coach_id);
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
$tbl_session_user = Database :: get_main_table(TABLE_MAIN_SESSION_USER);
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
$a_students = array ();
//////////////////////////////////////////////////////////////
// At first, courses where $coach_id is coach of the course //
//////////////////////////////////////////////////////////////
$sql = 'SELECT id_session, course_code FROM ' . $tbl_session_course_user . ' WHERE id_user=' . $coach_id.' AND status=2';
global $_configuration;
if ($_configuration['multiple_access_urls']==true) {
$tbl_session_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
$access_url_id = api_get_current_access_url_id();
if ($access_url_id != -1) {
$sql = 'SELECT scu.id_session, scu.course_code
FROM ' . $tbl_session_course_user . ' scu INNER JOIN '.$tbl_session_rel_access_url.' sru
ON (scu.id_session=sru.session_id)
WHERE scu.id_user=' . $coach_id.' AND scu.status=2 AND sru.access_url_id = '.$access_url_id;
}
}
$result = Database::query($sql,__FILE__,__LINE__);
while ($a_courses = Database::fetch_array($result)) {
$course_code = $a_courses["course_code"];
$id_session = $a_courses["id_session"];
$sql = "SELECT distinct srcru.id_user
FROM $tbl_session_course_user AS srcru, $tbl_session_user sru
WHERE srcru.id_user = sru.id_user AND srcru.id_session = sru.id_session AND srcru.course_code='$course_code' AND srcru.id_session='$id_session'";
$rs = Database::query($sql,__FILE__,__LINE__);
while ($row = Database::fetch_array($rs)) {
$a_students[$row['id_user']] = $row['id_user'];
}
}
//////////////////////////////////////////////////////////////
// Then, courses where $coach_id is coach of the session //
//////////////////////////////////////////////////////////////
$sql = 'SELECT session_course_user.id_user
FROM ' . $tbl_session_course_user . ' as session_course_user
INNER JOIN '.$tbl_session_user.' sru ON session_course_user.id_user = sru.id_user AND session_course_user.id_session = sru.id_session
INNER JOIN ' . $tbl_session_course . ' as session_course
ON session_course.course_code = session_course_user.course_code
AND session_course_user.id_session = session_course.id_session
INNER JOIN ' . $tbl_session . ' as session
ON session.id = session_course.id_session
AND session.id_coach = ' . $coach_id;
if ($_configuration['multiple_access_urls']==true) {
$tbl_session_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
$access_url_id = api_get_current_access_url_id();
if ($access_url_id != -1){
$sql = 'SELECT session_course_user.id_user
FROM ' . $tbl_session_course_user . ' as session_course_user
INNER JOIN '.$tbl_session_user.' sru ON session_course_user.id_user = sru.id_user AND session_course_user.id_session = sru.id_session
INNER JOIN ' . $tbl_session_course . ' as session_course
ON session_course.course_code = session_course_user.course_code
AND session_course_user.id_session = session_course.id_session
INNER JOIN ' . $tbl_session . ' as session
ON session.id = session_course.id_session
AND session.id_coach = ' . $coach_id.'
INNER JOIN '.$tbl_session_rel_access_url.' session_rel_url
ON session.id = session_rel_url.session_id WHERE access_url_id = '.$access_url_id;
}
}
$result = Database::query($sql,__FILE__,__LINE__);
while ($row = Database::fetch_array($result)) {
$a_students[$row['id_user']] = $row['id_user'];
}
return $a_students;
}
function get_student_followed_by_coach_in_a_session($id_session, $coach_id) {
$coach_id = intval($coach_id);
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
$a_students = array ();
//////////////////////////////////////////////////////////////
// At first, courses where $coach_id is coach of the course //
//////////////////////////////////////////////////////////////
$sql = 'SELECT course_code FROM ' . $tbl_session_course_user . ' WHERE id_session="' . $id_session . '" AND id_user=' . $coach_id.' AND status=2';
$result = Database::query($sql,__FILE__,__LINE__);
while ($a_courses = Database::fetch_array($result)) {
$course_code = $a_courses["course_code"];
$sql = "SELECT distinct srcru.id_user
FROM $tbl_session_course_user AS srcru
WHERE course_code='$course_code' and id_session = '" . $id_session . "'";
$rs = Database::query($sql, __FILE__, __LINE__);
while ($row = Database::fetch_array($rs)) {
$a_students[$row['id_user']] = $row['id_user'];
}
}
//////////////////////////////////////////////////////////////
// Then, courses where $coach_id is coach of the session //
//////////////////////////////////////////////////////////////
$dsl_session_coach = 'SELECT id_coach FROM ' . $tbl_session . ' WHERE id="' . $id_session . '" AND id_coach="' . $coach_id . '"';
$result = Database::query($dsl_session_coach, __FILE__, __LINE__);
//He is the session_coach so we select all the users in the session
if (Database::num_rows($result) > 0) {
$sql = 'SELECT DISTINCT srcru.id_user FROM ' . $tbl_session_course_user . ' AS srcru WHERE id_session="' . $id_session . '"';
$result = Database::query($sql,__FILE__,__LINE__);
while ($row = Database::fetch_array($result)) {
$a_students[$row['id_user']] = $row['id_user'];
}
}
return $a_students;
}
function is_allowed_to_coach_student($coach_id, $student_id) {
$coach_id = intval($coach_id);
$student_id = intval($student_id);
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
//////////////////////////////////////////////////////////////
// At first, courses where $coach_id is coach of the course //
//////////////////////////////////////////////////////////////
/*$sql = 'SELECT 1
FROM ' . $tbl_session_course_user . ' AS session_course_user
INNER JOIN ' . $tbl_session_course . ' AS session_course
ON session_course.course_code = session_course_user.course_code
AND id_coach=' . $coach_id . '
WHERE id_user=' . $student_id;*/
$sql = 'SELECT 1 FROM ' . $tbl_session_course_user . ' WHERE id_user=' . $coach_id .' AND status=2';
$result = Database::query($sql, __FILE__, __LINE__);
if (Database::num_rows($result) > 0) {
return true;
}
//////////////////////////////////////////////////////////////
// Then, courses where $coach_id is coach of the session //
//////////////////////////////////////////////////////////////
$sql = 'SELECT session_course_user.id_user
FROM ' . $tbl_session_course_user . ' as session_course_user
INNER JOIN ' . $tbl_session_course . ' as session_course
ON session_course.course_code = session_course_user.course_code
INNER JOIN ' . $tbl_session . ' as session
ON session.id = session_course.id_session
AND session.id_coach = ' . $coach_id . '
WHERE id_user = ' . $student_id;
$result = Database::query($sql, __FILE__, __LINE__);
if (Database::num_rows($result) > 0) {
return true;
}
return false;
}
function get_courses_followed_by_coach($coach_id, $id_session = '')
{
$coach_id = intval($coach_id);
if (!empty ($id_session))
$id_session = intval($id_session);
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
$tbl_course = Database :: get_main_table(TABLE_MAIN_COURSE);
//////////////////////////////////////////////////////////////
// At first, courses where $coach_id is coach of the course //
//////////////////////////////////////////////////////////////
$sql = 'SELECT DISTINCT course_code FROM ' . $tbl_session_course_user . ' WHERE id_user=' . $coach_id.' AND status=2';
global $_configuration;
if ($_configuration['multiple_access_urls']==true) {
$tbl_course_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
$access_url_id = api_get_current_access_url_id();
if ($access_url_id != -1){
$sql = 'SELECT DISTINCT scu.course_code FROM ' . $tbl_session_course_user . ' scu INNER JOIN '.$tbl_course_rel_access_url.' cru
ON (scu.course_code = cru.course_code)
WHERE scu.id_user=' . $coach_id.' AND scu.status=2 AND cru.access_url_id = '.$access_url_id;
}
}
if (!empty ($id_session))
$sql .= ' AND id_session=' . $id_session;
$result = Database::query($sql, __FILE__, __LINE__);
while ($row = Database::fetch_array($result)) {
$a_courses[$row['course_code']] = $row['course_code'];
}
//////////////////////////////////////////////////////////////
// Then, courses where $coach_id is coach of the session //
//////////////////////////////////////////////////////////////
$sql = 'SELECT DISTINCT session_course.course_code
FROM ' . $tbl_session_course . ' as session_course
INNER JOIN ' . $tbl_session . ' as session
ON session.id = session_course.id_session
AND session.id_coach = ' . $coach_id . '
INNER JOIN ' . $tbl_course . ' as course
ON course.code = session_course.course_code';
if ($_configuration['multiple_access_urls']==true) {
$tbl_course_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
$access_url_id = api_get_current_access_url_id();
if ($access_url_id != -1){
$sql = 'SELECT DISTINCT session_course.course_code
FROM ' . $tbl_session_course . ' as session_course
INNER JOIN ' . $tbl_session . ' as session
ON session.id = session_course.id_session
AND session.id_coach = ' . $coach_id . '
INNER JOIN ' . $tbl_course . ' as course
ON course.code = session_course.course_code
INNER JOIN '.$tbl_course_rel_access_url.' course_rel_url
ON (session_course.course_code = course_rel_url.course_code)';
}
}
if (!empty ($id_session)) {
$sql .= ' WHERE session_course.id_session=' . $id_session;
if ($_configuration['multiple_access_urls']==true)
$sql .= ' AND access_url_id = '.$access_url_id;
} else {
if ($_configuration['multiple_access_urls']==true)
$sql .= ' WHERE access_url_id = '.$access_url_id;
}
$result = Database::query($sql, __FILE__, __LINE__);
while ($row = Database::fetch_array($result)) {
$a_courses[$row['course_code']] = $row['course_code'];
}
return $a_courses;
}
function get_sessions_coached_by_user($coach_id) {
// table definition
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
// protect datas
$coach_id = intval($coach_id);
// session where we are general coach
$sql = 'SELECT DISTINCT id, name, date_start, date_end
FROM ' . $tbl_session . '
WHERE id_coach=' . $coach_id;
global $_configuration;
if ($_configuration['multiple_access_urls']==true) {
$tbl_session_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
$access_url_id = api_get_current_access_url_id();
if ($access_url_id != -1){
$sql = 'SELECT DISTINCT id, name, date_start, date_end
FROM ' . $tbl_session . ' session INNER JOIN '.$tbl_session_rel_access_url.' session_rel_url
ON (session.id = session_rel_url.session_id)
WHERE id_coach=' . $coach_id.' AND access_url_id = '.$access_url_id;
}
}
$rs = Database::query($sql,__FILE__,__LINE__);
while ($row = Database::fetch_array($rs))
{
$a_sessions[$row["id"]] = $row;
}
// session where we are coach of a course
$sql = 'SELECT DISTINCT session.id, session.name, session.date_start, session.date_end
FROM ' . $tbl_session . ' as session
INNER JOIN ' . $tbl_session_course_user . ' as session_course_user
ON session.id = session_course_user.id_session
AND session_course_user.id_user=' . $coach_id.' AND session_course_user.status=2';
global $_configuration;
if ($_configuration['multiple_access_urls']==true) {
$tbl_session_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
$access_url_id = api_get_current_access_url_id();
if ($access_url_id != -1){
$sql = 'SELECT DISTINCT session.id, session.name, session.date_start, session.date_end
FROM ' . $tbl_session . ' as session
INNER JOIN ' . $tbl_session_course_user . ' as session_course_user
ON session.id = session_course_user.id_session AND session_course_user.id_user=' . $coach_id.' AND session_course_user.status=2
INNER JOIN '.$tbl_session_rel_access_url.' session_rel_url
ON (session.id = session_rel_url.session_id)
WHERE access_url_id = '.$access_url_id;
}
}
$rs = Database::query($sql,__FILE__,__LINE__);
while ($row = Database::fetch_array($rs))
{
$a_sessions[$row["id"]] = $row;
}
if (is_array($a_sessions)) {
foreach ($a_sessions as & $session) {
if ($session['date_start'] == '0000-00-00') {
$session['status'] = get_lang('SessionActive');
}
else {
$date_start = explode('-', $session['date_start']);
$time_start = mktime(0, 0, 0, $date_start[1], $date_start[2], $date_start[0]);
$date_end = explode('-', $session['date_end']);
$time_end = mktime(0, 0, 0, $date_end[1], $date_end[2], $date_end[0]);
if ($time_start < time() && time() < $time_end) {
$session['status'] = get_lang('SessionActive');
}
else{
if (time() < $time_start) {
$session['status'] = get_lang('SessionFuture');
}
else{
if (time() > $time_end) {
$session['status'] = get_lang('SessionPast');
}
}
}
}
}
}
return $a_sessions;
}
function get_courses_list_from_session($session_id) {
//protect datas
$session_id = intval($session_id);
// table definition
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
$sql = 'SELECT DISTINCT course_code
FROM ' . $tbl_session_course . '
WHERE id_session=' . $session_id;
$rs = Database::query($sql, __FILE__, __LINE__);
$a_courses = array ();
while ($row = Database::fetch_array($rs)) {
$a_courses[$row['course_code']] = $row;
}
return $a_courses;
}
function count_student_assignments($student_id, $course_code) {
require_once (api_get_path(LIBRARY_PATH) . 'course.lib.php');
// protect datas
$course_code = Database::escape_string($course_code);
// get the informations of the course
$a_course = CourseManager :: get_course_information($course_code);
if (!empty($a_course['db_name'])) {
// table definition
$tbl_item_property = Database :: get_course_table(TABLE_ITEM_PROPERTY, $a_course['db_name']);
$condition_user = "";
if (is_array($student_id)) {
$condition_user = " AND insert_user_id IN (".implode(',',$student_id).") ";
} else {
$condition_user = " AND insert_user_id = '$student_id' ";
}
$sql = "SELECT count(tool) FROM $tbl_item_property WHERE tool='work' $condition_user ";
$rs = Database::query($sql, __LINE__, __FILE__);
$row = Database::fetch_row($rs);
return $row[0];
}
return null;
}
function count_student_messages($student_id, $course_code) {
require_once (api_get_path(LIBRARY_PATH) . 'course.lib.php');
// protect datas
$course_code = addslashes($course_code);
// get the informations of the course
$a_course = CourseManager :: get_course_information($course_code);
if (!empty($a_course['db_name'])) {
// table definition
$tbl_messages = Database :: get_course_table(TABLE_FORUM_POST, $a_course['db_name']);
$condition_user = "";
if (is_array($student_id)) {
$condition_user = " WHERE poster_id IN (".implode(',',$student_id).") ";
} else {
$condition_user = " WHERE poster_id = '$student_id' ";
}
$sql = "SELECT count(post_id) FROM $tbl_messages $condition_user ";
$rs = Database::query($sql, __LINE__, __FILE__);
$row = Database::fetch_row($rs);
return $row[0];
}
return null;
}
/**
* This function counts the number of post by course
* @param string $course_code - Course ID
* @return int the number of post by course
* @author Christian Fasanando <christian.fasanando@dokeos.com>,
* @version enero 2009, dokeos 1.8.6
*/
function count_number_of_posts_by_course($course_code) {
//protect data
$course_code = addslashes($course_code);
// get the informations of the course
$a_course = CourseManager :: get_course_information($course_code);
$count = 0;
if (!empty($a_course['db_name'])) {
$tbl_posts = Database :: get_course_table(TABLE_FORUM_POST, $a_course['db_name']);
$sql = "SELECT count(*) FROM $tbl_posts";
$result = Database::query($sql, __FILE__, __LINE__);
$row = Database::fetch_row($result);
$count = $row[0];
return $count;
} else {
return null;
}
}
/**
* This function counts the number of threads by course
* @param string $course_code - Course ID
* @return int the number of threads by course
* @author Christian Fasanando <christian.fasanando@dokeos.com>,
* @version enero 2009, dokeos 1.8.6
*/
function count_number_of_threads_by_course($course_code) {
//protect data
$course_code = addslashes($course_code);
// get the informations of the course
$a_course = CourseManager :: get_course_information($course_code);
$count = 0;
if (!empty($a_course['db_name'])) {
$tbl_threads = Database :: get_course_table(TABLE_FORUM_THREAD, $a_course['db_name']);
$sql = "SELECT count(*) FROM $tbl_threads";
$result = Database::query($sql, __FILE__, __LINE__);
$row = Database::fetch_row($result);
$count = $row[0];
return $count;
} else {
return null;
}
}
/**
* This function counts the number of forums by course
* @param string $course_code - Course ID
* @return int the number of forums by course
* @author Christian Fasanando <christian.fasanando@dokeos.com>,
* @version enero 2009, dokeos 1.8.6
*/
function count_number_of_forums_by_course($course_code) {
//protect data
$course_code = addslashes($course_code);
// get the informations of the course
$a_course = CourseManager :: get_course_information($course_code);
$count = 0;
if (!empty($a_course['db_name'])) {
$tbl_forums = Database :: get_course_table(TABLE_FORUM, $a_course['db_name']);
$sql = "SELECT count(*) FROM $tbl_forums";
$result = Database::query($sql, __FILE__, __LINE__);
$row = Database::fetch_row($result);
$count = $row[0];
return $count;
} else {
return null;
}
}
/**
* This function counts the chat last connections by course in x days
* @param string $course_code - Course ID
* @param int $last_days - last x days
* @return int the chat last connections by course in x days
* @author Christian Fasanando <christian.fasanando@dokeos.com>,
* @version enero 2009, dokeos 1.8.6
*/
function chat_connections_during_last_x_days_by_course($course_code,$last_days) {
//protect data
$last_days = intval($last_days);
$course_code = addslashes($course_code);
// get the informations of the course
$a_course = CourseManager :: get_course_information($course_code);
$count = 0;
if (!empty($a_course['db_name'])) {
$tbl_stats_access = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_ACCESS, $a_course['db_name']);
$sql = "SELECT count(*) FROM $tbl_stats_access WHERE DATE_SUB(NOW(),INTERVAL $last_days DAY) <= access_date
AND access_cours_code = '$course_code' AND access_tool='".TOOL_CHAT."'";
$result = Database::query($sql, __FILE__, __LINE__);
$row = Database::fetch_row($result);
$count = $row[0];
return $count;
} else {
return null;
}
}
/**
* This function gets the last student's connection in chat
* @param int $student_id - Student ID
* @param string $course_code - Course ID
* @return string the last connection
* @author Christian Fasanando <christian.fasanando@dokeos.com>,
* @version enero 2009, dokeos 1.8.6
*/
function chat_last_connection($student_id,$course_code) {
require_once (api_get_path(LIBRARY_PATH) . 'course.lib.php');
//protect datas
$student_id = intval($student_id);
$course_code = addslashes($course_code);
// get the informations of the course
$a_course = CourseManager :: get_course_information($course_code);
$date_time = '';
if (!empty($a_course['db_name'])) {
// table definition
$tbl_stats_access = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_ACCESS, $a_course['db_name']);
$sql = "SELECT access_date FROM $tbl_stats_access
WHERE access_tool='".TOOL_CHAT."' AND access_user_id='$student_id' AND access_cours_code = '$course_code' ORDER BY access_date DESC limit 1";
$rs = Database::query($sql, __LINE__, __FILE__);
$row = Database::fetch_array($rs);
$last_connection = $row['access_date'];
if (!empty($last_connection)) {
$date_format_long = format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_connection));
$time = explode(' ',$last_connection);
$date_time = $date_format_long.' '.$time[1];
}
return $date_time;
} else {
return null;
}
}
function count_student_visited_links($student_id, $course_code) {
// protect datas
$student_id = intval($student_id);
$course_code = addslashes($course_code);
// table definition
$tbl_stats_links = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LINKS);
$sql = 'SELECT 1
FROM ' . $tbl_stats_links . '
WHERE links_user_id=' . $student_id . '
AND links_cours_id="' . $course_code . '"';
$rs = Database::query($sql, __LINE__, __FILE__);
return Database::num_rows($rs);
}
function count_student_downloaded_documents($student_id, $course_code) {
// protect datas
$student_id = intval($student_id);
$course_code = addslashes($course_code);
// table definition
$tbl_stats_documents = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_DOWNLOADS);
$sql = 'SELECT 1
FROM ' . $tbl_stats_documents . '
WHERE down_user_id=' . $student_id . '
AND down_cours_id="' . $course_code . '"';
$rs = Database::query($sql, __LINE__, __FILE__);
return Database::num_rows($rs);
}
function get_course_list_in_session_from_student($user_id, $id_session) {
$user_id = intval($user_id);
$id_session = intval($id_session);
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$sql = 'SELECT course_code FROM ' . $tbl_session_course_user . ' WHERE id_user="' . $user_id . '" AND id_session="' . $id_session . '"';
$result = Database::query($sql, __LINE__, __FILE__);
$a_courses = array ();
while ($row = Database::fetch_array($result)) {
$a_courses[$row['course_code']] = $row['course_code'];
}
return $a_courses;
}
function get_inactives_students_in_course($course_code, $since, $session_id=0)
{
$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$table_course_rel_user = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
$inner = '';
if($session_id!=0)
{
$inner = ' INNER JOIN '.$tbl_session_course_user.' session_course_user
ON stats_login.course_code = session_course_user.course_code
AND session_course_user.id_session = '.intval($session_id).'
AND session_course_user.id_user = stats_login.user_id ';
}
$sql = 'SELECT user_id, MAX(login_course_date) max_date FROM'.$tbl_track_login.' stats_login'.$inner.'
GROUP BY user_id
HAVING DATE_SUB( NOW(), INTERVAL '.$since.' DAY) > max_date ';
//HAVING DATE_ADD(max_date, INTERVAL '.$since.' DAY) < NOW() ';
if ($since == 'never') {
$sql = 'SELECT course_user.user_id FROM '.$table_course_rel_user.' course_user
LEFT JOIN '. $tbl_track_login.' stats_login
ON course_user.user_id = stats_login.user_id'.
$inner.'
WHERE course_user.course_code = \''.Database::escape_string($course_code).'\'
AND stats_login.login_course_date IS NULL
GROUP BY course_user.user_id';
}
$rs = api_sql_query($sql,__FILE__,__LINE__);
$inactive_users = array();
while($user = Database::fetch_array($rs))
{
$inactive_users[] = $user['user_id'];
}
return $inactive_users;
}
function count_login_per_student($student_id, $course_code) {
$student_id = intval($student_id);
$course_code = addslashes($course_code);
$tbl_course_rel_user = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ACCESS);
$sql = 'SELECT '.$student_id.'
FROM ' . $tbl_course_rel_user . '
WHERE access_user_id=' . $student_id . '
AND access_cours_code="' . $course_code . '"';
$rs = Database::query($sql, __FILE__, __LINE__);
$nb_login = Database::num_rows($rs);
return $nb_login;
}
function get_student_followed_by_drh($hr_dept_id) {
$hr_dept_id = intval($hr_dept_id);
$a_students = array ();
$tbl_organism = Database :: get_main_table(TABLE_MAIN_ORGANISM);
$tbl_user = Database :: get_main_table(TABLE_MAIN_USER);
$sql = 'SELECT DISTINCT user_id FROM '.$tbl_user.' as user
WHERE hr_dept_id='.$hr_dept_id;
$rs = Database::query($sql, __FILE__, __LINE__);
while($user = Database :: fetch_array($rs))
{
$a_students[$user['user_id']] = $user['user_id'];
}
return $a_students;
}
/**
* allow get average of test of scorm and lp
* @author isaac flores paz <florespaz@bidsoftperu.com>
* @param int the user id
* @param string the course id
*/
function get_average_test_scorm_and_lp ($user_id,$course_id) {
//the score inside the Reporting table
$course_info=api_get_course_info($course_id);
$lp_table = Database :: get_course_table(TABLE_LP_MAIN,$course_info['dbName']);
$lp_view_table = Database :: get_course_table(TABLE_LP_VIEW,$course_info['dbName']);
$lp_item_view_table = Database :: get_course_table(TABLE_LP_ITEM_VIEW,$course_info['dbName']);
$lp_item_table = Database :: get_course_table(TABLE_LP_ITEM,$course_info['dbName']);
$sql_type='SELECT id,lp_type FROM '.$lp_table;
$rs_type=Database::query($sql_type);
$average_data=0;
$count_loop=0;
while ($row_type=Database::fetch_array($rs_type)) {
if ($row_type['lp_type']==1) {//lp dokeos
$sql = "SELECT id FROM $lp_view_table WHERE user_id = '".intval($user_id)."' and lp_id='".$row_type['id']."'";
$rs_last_lp_view_id = Database::query($sql, __FILE__, __LINE__);
$lp_view_id = intval(Database::result($rs_last_lp_view_id,0,'id'));
$sql_list_view='SELECT li.max_score,lv.user_id,liw.score,(liw.score/li.max_score) as sum_data FROM '.$lp_item_table.' li INNER JOIN '.$lp_view_table.' lv
ON li.lp_id=lv.lp_id INNER JOIN '.$lp_item_view_table.' liw ON liw.lp_item_id=li.id WHERE lv.user_id="'.$user_id.'" AND li.item_type="quiz" AND liw.lp_view_id="'.$lp_view_id.'"';
$sum=0;
$tot=0;
$rs_list_view1=Database::query($sql_list_view,__FILE__,__LINE__);
while ($row_list_view=Database::fetch_array($rs_list_view1)) {
$sum=$sum+$row_list_view['sum_data'];
$tot++;
}
if ($tot==0) {
$tot=1;
}
$average_data1=$sum/$tot;
$sql_list_view='';
$rs_last_lp_view_id='';
} elseif ($row_type['lp_type']==2) {//lp scorm
$sql = "SELECT id FROM $lp_view_table WHERE user_id = '".intval($user_id)."' and lp_id='".$row_type['id']."'";
$rs_last_lp_view_id = Database::query($sql, __FILE__, __LINE__);
$lp_view_id = intval(Database::result($rs_last_lp_view_id,0,'id'));
$sql_list_view='SELECT li.max_score,lv.user_id,liw.score,((liw.score/li.max_score)*100) as sum_data FROM '.$lp_item_table.' li INNER JOIN '.$lp_view_table.' lv
ON li.lp_id=lv.lp_id INNER JOIN '.$lp_item_view_table.' liw ON liw.lp_item_id=li.id WHERE lv.user_id="'.$user_id.'" AND li.item_type="sco" AND liw.lp_view_id="'.$lp_view_id.'"';
$tot=0;
$sum=0;
$rs_list_view2=Database::query($sql_list_view,__FILE__,__LINE__);
while ($row_list_view=Database::fetch_array($rs_list_view2)) {
$sum=$sum+$row_list_view['sum_data'];
$tot++;
}
if ($tot==0) {
$tot=1;
}
$average_data2=$sum/$tot;
}
$average_data_sum=$average_data_sum+$average_data1+$average_data2;
$average_data2=0;
$average_data1=0;
$count_loop++;
}
if ((int)$count_loop > 0) {
$avg_student_score = round(($average_data_sum / $count_loop * 100), 2);
}
return $avg_student_score;
}
}
?>